Transcript
AT8035 Line + Gradient Condenser Microphone
broadcast & production microphones
Output is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”— positive acoustic pressure produces positive voltage at Pin 2. To avoid phase cancellation and poor sound, all mic cables must be wired consistently: Pin 1-to-Pin 1, etc. An integral 80 Hz high-pass filter provides easy switching from a flat frequency response to a low-end roll-off. The roll-off position reduces the pickup of low-frequency ambient noise (such as traffic, air-handling systems, etc.), room reverberation and mechanically coupled vibrations. To engage the high-pass filter, use the end tip of a paperclip or other small pointed instrument to slide the switch toward the “bent” line. Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110° F (43° C) for extended periods. Extremely high humidity should also be avoided. Features • Designed for video production and broadcast (ENG/EFP) audio acquisition • Provides the narrow acceptance angle desirable for long-distance sound pickup • Smooth, natural-sounding on-axis audio quality • Offers the convenience of battery or phantom power operation • Rugged design and construction for reliable performance • Switchable 80 Hz high-pass filter minimizes pickup of undesired low-frequency sounds Description The AT8035 is a fixed-charge condenser microphone with a line + gradient polar pattern. It is designed for video production, broadcast (ENG/EFP) audio acquisition, wildlife recording and high-quality sound reinforcement. The microphone requires 11V to 52V phantom power or a 1.5V AA battery for operation. A battery need not be in place for phantom power operation. The microphone's highly directional polar pattern provides a narrow acceptance angle along with crisp, intelligible audio reproduction desirable for long-distance sound pickup. The output of the microphone is a 3-pin XLRM-type connector. A switch permits choice of flat response or low-frequency roll-off (via integral 80 Hz high-pass filter) to help control undesired ambient noise.
Note: To use the microphone with a camera-mount microphone holder whose diameter is too large to secure the microphone, slide the two supplied o-rings onto the microphone handle, spaced so that one fits just in front of, and the other fits just behind, the rubber nubs inside the microphone holder. When the top of the microphone holder is closed and tightened down, the o-rings should hold the microphone securely in place. Architect’s and Engineer’s Specifications The microphone shall be a fixed-charge condenser. It shall have a line + gradient polar pattern and a frequency response of 40 Hz to 20,000 Hz. The microphone shall operate from an external 11V to 52V DC phantom power source, or, alternatively, from a 1.5V AA/UM3 battery. It shall be capable of handling sound input levels up to 132 dB (phantom) or 120 dB (battery) with a dynamic range of 110 dB (phantom) or 98 dB (battery). Nominal open circuit output voltage shall be 12.5 mV (phantom) or 11.2 mV (battery) at 1 V, 1 Pascal. Output shall be low impedance balanced (250 ohms – phantom, 300 ohms – battery). The output of the microphone shall be a 3-pin XLRM-type output connector. The microphone shall include a switch that permits choice of flat response or 80 Hz low-frequency roll-off. The microphone shall be 369.0 mm (14.53") long and have a diameter of 21.0 mm (0.83"). Weight shall be 170 grams (6.0 oz). The microphone shall include a stand clamp, a windscreen, two o-rings, a battery and a protective carrying case. The Audio-Technica AT8035 is specified.
The microphone is enclosed in a rugged housing. The included AT8405a stand clamp permits mounting on any microphone stand with 5/8"-27 threads. A windscreen, two o-rings, a battery and a protective carrying case are also included. Operation and Maintenance The AT8035 requires 11V to 52V phantom power or a 1.5V AA battery for operation. A battery need not be in place for phantom power operation. To install the battery, unscrew the lower section of the microphone body, just below the nameplate. Insert a fresh 1.5V AA battery in the handle compartment (“+” end up), then reassemble the microphone. Alkaline batteries are recommended for longest life. Remove the battery during long-term storage.
AT8035 Specifications Element
Fixed-charge back plate, permanently polarized condenser Line + gradient 40-20,000 Hz 80 Hz, 18 dB/octave Phantom: –38 dB (12.5 mV) re 1V at 1 Pa Battery: –39 dB (11.2 mV) re 1V at 1 Pa Phantom: 250 ohms Battery: 300 ohms Phantom: 132 dB SPL, 1 kHz at 1% T.H.D. Battery: 120 dB SPL, 1 kHz at 1% T.H.D. Phantom: 110 dB, 1 kHz at Max SPL Battery: 98 dB, 1 kHz at Max SPL 72 dB, 1 kHz at 1 Pa 11-52V DC, 2 mA typical 1.5V AA/UM3 0.4 mA / 1200 hours typical (alkaline) Flat, roll-off 170 g (6.0 oz) 369.0 mm (14.53") long, 21.0 mm (0.83") diameter Integral 3-pin XLRM-type SG1 AT8405a stand clamp for 5/8"-27 threaded stands; 5/8"-27 to 3/8"-16 threaded adapter; AT8132 windscreen; battery; two o-rings; protective carrying case
Polar pattern Frequency response Low frequency roll-off Open circuit sensitivity Impedance Maximum input sound level Dynamic range (typical) Signal-to-noise ratio1 Phantom power requirements Battery type Battery current / life Switch Weight Dimensions Output connector Audio-Technica case style Accessories furnished
In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request. 1 Pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL 1
Typical, A-weighted, using Audio Precision System One. Specifications are subject to change without notice.
10 dB
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100
LEGEND
500 200 2k 1k Frequency in Hertz 12" or more on axis Roll-off
5k
10k
Response in dB
frequency response: 40 – 20,000 Hz
20k
polar pattern 330˚
0˚
30˚ 60˚
300˚
90˚
270˚
120˚
240˚ 210˚
180˚
150˚
SCALE IS 5 DECIBELS PER DIVISION
LEGEND 200 Hz 1 kHz 5 kHz 8 kHz
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